User Guide

PAMS
System Module DB6
NHB–3
Technical Documentation
Original 26/97
Page 4–30
Audio Route
RF
RFI
ASIC
D2CA
ASIC
DSP CODEC
ST5080
A
– 12–bit A/D
RXQ
RXI
RFIDA
(11:0)
DSPDA
(15:0)
PCMIN
CODEC
ST5080
A
DSP D2CA
ASIC
RFI
ASIC
RF
PCM
OUT
DSPDA
(15:0)
TXQP
TXQN
TXIN
TXIP
MIC
RFIDA
(11:0)
– 8–bit D/A
EARPIECE
XMI
C
XEA
R
Main components
Audio codec ST5080:
Contains e.g. PCM codec, audio routing switches, microphone and
earpiece amplifiers for 2 connections (internal and external devices)
and DTMF generator.